Code Definition

P0308 — Cylinder 8 Misfire Detected

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0308

P0308 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0308 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0308 fault code is triggered when the powertrain control module (PCM) detects a misfire in cylinder 8. A misfire indicates that the air-fuel mixture in the cylinder is not combusting as intended, which may cause symptoms such as rough running, reduced performance, and higher emissions.

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